Re: mm: BUG in unmap_page_range
From: Sasha Levin
Date: Wed Sep 10 2014 - 16:37:18 EST
On 09/10/2014 03:09 PM, Hugh Dickins wrote:
> Thanks for supplying, but the change in inlining means that
> change_protection_range() and change_protection() are no longer
> relevant for these traces, we now need to see change_pte_range()
> instead, to confirm that what I expect are ptes are indeed ptes.
>
> If you can include line numbers (objdump -ld) in the disassembly, so
> much the better, but should be decipherable without. (Or objdump -Sd
> for source, but I often find that harder to unscramble, can't say why.)
Here it is. Note that the source includes both of Mel's debug patches.
For reference, here's one trace of the issue with those patches:
[ 3114.540976] kernel BUG at include/asm-generic/pgtable.h:724!
[ 3114.541857] invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
[ 3114.543112] Dumping ftrace buffer:
[ 3114.544056] (ftrace buffer empty)
[ 3114.545000] Modules linked in:
[ 3114.545717] CPU: 18 PID: 30217 Comm: trinity-c617 Tainted: G W 3.17.0-rc4-next-20140910-sasha-00032-g6825fb5-dirty #1137
[ 3114.548058] task: ffff880415050000 ti: ffff88076f584000 task.ti: ffff88076f584000
[ 3114.549284] RIP: 0010:[<ffffffff952e527a>] [<ffffffff952e527a>] change_pte_range+0x4ea/0x4f0
[ 3114.550028] RSP: 0000:ffff88076f587d68 EFLAGS: 00010246
[ 3114.550028] RAX: 0000000314625900 RBX: 0000000041218000 RCX: 0000000000000100
[ 3114.550028] RDX: 0000000314625900 RSI: 0000000041218000 RDI: 0000000314625900
[ 3114.550028] RBP: ffff88076f587dc8 R08: ffff8802cf973600 R09: 0000000000b50000
[ 3114.550028] R10: 0000000000032c01 R11: 0000000000000008 R12: ffff8802a81070c0
[ 3114.550028] R13: 8000000000000025 R14: 0000000041343000 R15: ffffc00000000fff
[ 3114.550028] FS: 00007fabb91c8700(0000) GS:ffff88025ec00000(0000) knlGS:0000000000000000
[ 3114.550028] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 3114.550028] CR2: 00007fffdb7678e8 CR3: 0000000713935000 CR4: 00000000000006a0
[ 3114.550028] DR0: 00000000006f0000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3114.550028] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000050602
[ 3114.550028] Stack:
[ 3114.550028] 0000000000000001 0000000314625900 0000000000000018 ffff8802685f2260
[ 3114.550028] 0000000016840000 ffff8802cf973600 ffff880616840000 0000000041343000
[ 3114.550028] ffff880108805048 0000000041005000 0000000041200000 0000000041343000
[ 3114.550028] Call Trace:
[ 3114.550028] [<ffffffff952e5534>] change_protection+0x2b4/0x4e0
[ 3114.550028] [<ffffffff952ff24b>] change_prot_numa+0x1b/0x40
[ 3114.550028] [<ffffffff951adf16>] task_numa_work+0x1f6/0x330
[ 3114.550028] [<ffffffff95193de4>] task_work_run+0xc4/0xf0
[ 3114.550028] [<ffffffff95071477>] do_notify_resume+0x97/0xb0
[ 3114.550028] [<ffffffff9850f06a>] int_signal+0x12/0x17
[ 3114.550028] Code: 66 90 48 8b 7d b8 e8 e6 88 22 03 48 8b 45 b0 e9 6f ff ff ff 0f 1f 44 00 00 0f 0b 66 0f 1f 44 00 00 0f 0b 66 0f 1f 44 00 00 0f 0b <0f> 0b 0f 0b 0f 0b 66 66 66 66 90 55 48 89 e5 41 57 49 89 d7 41
[ 3114.550028] RIP [<ffffffff952e527a>] change_pte_range+0x4ea/0x4f0
[ 3114.550028] RSP <ffff88076f587d68>
And the disassembly:
0000000000000000 <change_pte_range>:
change_pte_range():
/home/sasha/linux-next/mm/mprotect.c:70
0: e8 00 00 00 00 callq 5 <change_pte_range+0x5>
1: R_X86_64_PC32 __fentry__-0x4
5: 55 push %rbp
6: 48 89 e5 mov %rsp,%rbp
9: 41 57 push %r15
b: 41 56 push %r14
d: 49 89 ce mov %rcx,%r14
10: 41 55 push %r13
12: 4d 89 c5 mov %r8,%r13
15: 41 54 push %r12
17: 49 89 f4 mov %rsi,%r12
1a: 53 push %rbx
1b: 48 89 d3 mov %rdx,%rbx
1e: 48 83 ec 38 sub $0x38,%rsp
/home/sasha/linux-next/mm/mprotect.c:71
22: 48 8b 47 40 mov 0x40(%rdi),%rax
/home/sasha/linux-next/mm/mprotect.c:70
26: 48 89 7d c8 mov %rdi,-0x38(%rbp)
lock_pte_protection():
/home/sasha/linux-next/mm/mprotect.c:53
2a: 8b 4d 10 mov 0x10(%rbp),%ecx
change_pte_range():
/home/sasha/linux-next/mm/mprotect.c:70
2d: 44 89 4d c4 mov %r9d,-0x3c(%rbp)
/home/sasha/linux-next/mm/mprotect.c:71
31: 48 89 45 d0 mov %rax,-0x30(%rbp)
lock_pte_protection():
/home/sasha/linux-next/mm/mprotect.c:53
35: 85 c9 test %ecx,%ecx
37: 0f 84 6b 03 00 00 je 3a8 <change_pte_range+0x3a8>
pmd_to_page():
/home/sasha/linux-next/include/linux/mm.h:1538
3d: 48 89 f7 mov %rsi,%rdi
40: 48 81 e7 00 f0 ff ff and $0xfffffffffffff000,%rdi
47: e8 00 00 00 00 callq 4c <change_pte_range+0x4c>
48: R_X86_64_PC32 __phys_addr-0x4
4c: 48 ba 00 00 00 00 00 movabs $0xffffea0000000000,%rdx
53: ea ff ff
56: 48 c1 e8 0c shr $0xc,%rax
spin_lock():
/home/sasha/linux-next/include/linux/spinlock.h:309
5a: 48 89 55 b8 mov %rdx,-0x48(%rbp)
5e: 48 c1 e0 06 shl $0x6,%rax
62: 4c 8b 7c 10 30 mov 0x30(%rax,%rdx,1),%r15
67: 4c 89 ff mov %r15,%rdi
6a: e8 00 00 00 00 callq 6f <change_pte_range+0x6f>
6b: R_X86_64_PC32 _raw_spin_lock-0x4
6f: 49 8b 3c 24 mov (%r12),%rdi
pmd_val():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:571
73: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 7b <change_pte_range+0x7b>
7a: 00
76: R_X86_64_PC32 pv_mmu_ops+0x10b
7b: 48 8b 55 b8 mov -0x48(%rbp),%rdx
7f: 0f 84 ab 03 00 00 je 430 <change_pte_range+0x430>
85: ff 14 25 00 00 00 00 callq *0x0
88: R_X86_64_32S pv_mmu_ops+0x110
lock_pte_protection():
/home/sasha/linux-next/mm/mprotect.c:57
8c: a8 80 test $0x80,%al
8e: 0f 85 a4 03 00 00 jne 438 <change_pte_range+0x438>
94: 49 8b 3c 24 mov (%r12),%rdi
98: 48 85 ff test %rdi,%rdi
9b: 0f 84 97 03 00 00 je 438 <change_pte_range+0x438>
pmd_val():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:571
a1: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # a9 <change_pte_range+0xa9>
a8: 00
a4: R_X86_64_PC32 pv_mmu_ops+0x10b
a9: 0f 84 81 03 00 00 je 430 <change_pte_range+0x430>
af: ff 14 25 00 00 00 00 callq *0x0
b2: R_X86_64_32S pv_mmu_ops+0x110
b6: 48 b9 00 f0 ff ff ff movabs $0x3ffffffff000,%rcx
bd: 3f 00 00
c0: 48 21 c8 and %rcx,%rax
c3: 48 89 c7 mov %rax,%rdi
c6: 48 c1 ef 06 shr $0x6,%rdi
ca: 48 8b 44 3a 30 mov 0x30(%rdx,%rdi,1),%rax
cf: 49 8b 3c 24 mov (%r12),%rdi
d3: 48 89 45 b8 mov %rax,-0x48(%rbp)
pte_offset_kernel():
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:551
d7: 48 89 d8 mov %rbx,%rax
da: 48 c1 e8 09 shr $0x9,%rax
de: 25 f8 0f 00 00 and $0xff8,%eax
pmd_val():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:571
e3: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # eb <change_pte_range+0xeb>
ea: 00
e6: R_X86_64_PC32 pv_mmu_ops+0x10b
pte_offset_kernel():
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:551
eb: 48 89 c2 mov %rax,%rdx
pmd_val():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:571
ee: 0f 84 3c 03 00 00 je 430 <change_pte_range+0x430>
f4: ff 14 25 00 00 00 00 callq *0x0
f7: R_X86_64_32S pv_mmu_ops+0x110
spin_lock():
/home/sasha/linux-next/include/linux/spinlock.h:309
fb: 48 8b 7d b8 mov -0x48(%rbp),%rdi
pmd_page_vaddr():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:571
ff: 49 89 c4 mov %rax,%r12
pte_offset_kernel():
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:551
102: 48 b8 00 00 00 00 00 movabs $0xffff880000000000,%rax
109: 88 ff ff
10c: 48 01 d0 add %rdx,%rax
10f: 4c 21 e1 and %r12,%rcx
112: 4c 8d 24 08 lea (%rax,%rcx,1),%r12
spin_lock():
/home/sasha/linux-next/include/linux/spinlock.h:309
116: e8 00 00 00 00 callq 11b <change_pte_range+0x11b>
117: R_X86_64_PC32 _raw_spin_lock-0x4
spin_unlock():
/home/sasha/linux-next/include/linux/spinlock.h:349
11b: 4c 89 ff mov %r15,%rdi
11e: e8 00 00 00 00 callq 123 <change_pte_range+0x123>
11f: R_X86_64_PC32 _raw_spin_unlock-0x4
arch_enter_lazy_mmu_mode():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:694
123: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 12b <change_pte_range+0x12b>
12a: 00
126: R_X86_64_PC32 pv_mmu_ops+0x133
12b: 0f 84 a7 03 00 00 je 4d8 <change_pte_range+0x4d8>
131: ff 14 25 00 00 00 00 callq *0x0
134: R_X86_64_32S pv_mmu_ops+0x138
massage_pgprot():
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:351
138: 4c 89 e8 mov %r13,%rax
change_pte_range():
/home/sasha/linux-next/mm/mprotect.c:74
13b: 48 c7 45 b0 00 00 00 movq $0x0,-0x50(%rbp)
142: 00
pte_present():
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:460
143: 49 bf ff 0f 00 00 00 movabs $0xffffc00000000fff,%r15
14a: c0 ff ff
massage_pgprot():
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:351
14d: 83 e0 01 and $0x1,%eax
150: 48 89 45 a0 mov %rax,-0x60(%rbp)
154: e9 fa 00 00 00 jmpq 253 <change_pte_range+0x253>
159: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
change_pte_range():
/home/sasha/linux-next/mm/mprotect.c:87
160: 8b 55 10 mov 0x10(%rbp),%edx
163: 85 d2 test %edx,%edx
165: 0f 85 85 01 00 00 jne 2f0 <change_pte_range+0x2f0>
ptep_modify_prot_start():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:490
16b: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 173 <change_pte_range+0x173>
172: 00
16e: R_X86_64_PC32 pv_mmu_ops+0xd3
173: 0f 84 2f 03 00 00 je 4a8 <change_pte_range+0x4a8>
179: 48 8b 7d d0 mov -0x30(%rbp),%rdi
17d: 48 89 de mov %rbx,%rsi
180: 4c 89 e2 mov %r12,%rdx
183: ff 14 25 00 00 00 00 callq *0x0
186: R_X86_64_32S pv_mmu_ops+0xd8
change_pte_range():
/home/sasha/linux-next/mm/mprotect.c:89
18a: 48 89 c2 mov %rax,%rdx
ptep_modify_prot_start():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:490
18d: 48 89 c7 mov %rax,%rdi
change_pte_range():
/home/sasha/linux-next/mm/mprotect.c:89
190: 81 e2 01 03 00 00 and $0x301,%edx
196: 48 81 fa 00 02 00 00 cmp $0x200,%rdx
19d: 0f 84 bd 02 00 00 je 460 <change_pte_range+0x460>
pte_val():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:450
1a3: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 1ab <change_pte_range+0x1ab>
1aa: 00
1a6: R_X86_64_PC32 pv_mmu_ops+0xe3
1ab: 0f 84 a7 02 00 00 je 458 <change_pte_range+0x458>
1b1: ff 14 25 00 00 00 00 callq *0x0
1b4: R_X86_64_32S pv_mmu_ops+0xe8
pte_modify():
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:377
1b8: 48 be 78 fa ff ff ff movabs $0x3ffffffffa78,%rsi
1bf: 3f 00 00
massage_pgprot():
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:352
1c2: 4c 89 ef mov %r13,%rdi
1c5: 48 23 3d 00 00 00 00 and 0x0(%rip),%rdi # 1cc <change_pte_range+0x1cc>
1c8: R_X86_64_PC32 __supported_pte_mask-0x4
pte_modify():
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:378
1cc: 48 ba 87 05 00 00 00 movabs $0xffffc00000000587,%rdx
1d3: c0 ff ff
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:377
1d6: 48 21 f0 and %rsi,%rax
massage_pgprot():
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:352
1d9: 48 83 7d a0 00 cmpq $0x0,-0x60(%rbp)
1de: 49 0f 44 fd cmove %r13,%rdi
pte_modify():
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:378
1e2: 48 89 f9 mov %rdi,%rcx
1e5: 48 21 d1 and %rdx,%rcx
1e8: 48 09 c1 or %rax,%rcx
__pte():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:435
1eb: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 1f3 <change_pte_range+0x1f3>
1f2: 00
1ee: R_X86_64_PC32 pv_mmu_ops+0xeb
pte_modify():
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:378
1f3: 48 89 cf mov %rcx,%rdi
__pte():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:435
1f6: 0f 84 a4 02 00 00 je 4a0 <change_pte_range+0x4a0>
1fc: ff 14 25 00 00 00 00 callq *0x0
1ff: R_X86_64_32S pv_mmu_ops+0xf0
203: 48 89 c1 mov %rax,%rcx
change_pte_range():
/home/sasha/linux-next/mm/mprotect.c:96
206: 8b 45 c4 mov -0x3c(%rbp),%eax
209: 85 c0 test %eax,%eax
20b: 74 0e je 21b <change_pte_range+0x21b>
pte_set_flags():
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:186 (discriminator 1)
20d: 48 89 c8 mov %rcx,%rax
210: 48 83 c8 02 or $0x2,%rax
214: f6 c1 40 test $0x40,%cl
217: 48 0f 45 c8 cmovne %rax,%rcx
ptep_modify_prot_commit():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:503
21b: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 223 <change_pte_range+0x223>
222: 00
21e: R_X86_64_PC32 pv_mmu_ops+0xdb
223: 0f 84 b7 02 00 00 je 4e0 <change_pte_range+0x4e0>
229: 48 8b 7d d0 mov -0x30(%rbp),%rdi
22d: 48 89 de mov %rbx,%rsi
230: 4c 89 e2 mov %r12,%rdx
233: ff 14 25 00 00 00 00 callq *0x0
236: R_X86_64_32S pv_mmu_ops+0xe0
change_pte_range():
/home/sasha/linux-next/mm/mprotect.c:128
23a: 48 83 45 b0 01 addq $0x1,-0x50(%rbp)
/home/sasha/linux-next/mm/mprotect.c:131
23f: 48 81 c3 00 10 00 00 add $0x1000,%rbx
246: 49 83 c4 08 add $0x8,%r12
24a: 4c 39 f3 cmp %r14,%rbx
24d: 0f 84 5d 02 00 00 je 4b0 <change_pte_range+0x4b0>
/home/sasha/linux-next/mm/mprotect.c:82
253: 49 8b 0c 24 mov (%r12),%rcx
pte_present():
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:460
257: 48 89 c8 mov %rcx,%rax
25a: 4c 21 f8 and %r15,%rax
change_pte_range():
/home/sasha/linux-next/mm/mprotect.c:83
25d: a9 01 03 00 00 test $0x301,%eax
262: 0f 85 f8 fe ff ff jne 160 <change_pte_range+0x160>
/home/sasha/linux-next/mm/mprotect.c:113
268: a8 40 test $0x40,%al
26a: 75 d3 jne 23f <change_pte_range+0x23f>
pte_swp_soft_dirty():
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:885
26c: a9 01 01 00 00 test $0x101,%eax
271: 0f 85 71 02 00 00 jne 4e8 <change_pte_range+0x4e8>
pte_clear_flags():
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:193
277: 48 89 ca mov %rcx,%rdx
27a: 41 89 c0 mov %eax,%r8d
27d: 80 e2 7f and $0x7f,%dl
280: 41 81 e0 80 00 00 00 and $0x80,%r8d
287: 48 0f 45 ca cmovne %rdx,%rcx
pte_val():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:450
28b: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 293 <change_pte_range+0x293>
292: 00
28e: R_X86_64_PC32 pv_mmu_ops+0xe3
293: 0f 84 bf 01 00 00 je 458 <change_pte_range+0x458>
299: 48 89 cf mov %rcx,%rdi
29c: ff 14 25 00 00 00 00 callq *0x0
29f: R_X86_64_32S pv_mmu_ops+0xe8
swp_entry():
/home/sasha/linux-next/include/linux/swapops.h:30
2a3: 48 89 c1 mov %rax,%rcx
2a6: 48 c1 e8 0a shr $0xa,%rax
2aa: 48 d1 e9 shr %rcx
2ad: 83 e1 1f and $0x1f,%ecx
2b0: 48 c1 e1 39 shl $0x39,%rcx
2b4: 48 09 c8 or %rcx,%rax
change_pte_range():
/home/sasha/linux-next/mm/mprotect.c:116
2b7: 48 89 c2 mov %rax,%rdx
2ba: 48 c1 ea 39 shr $0x39,%rdx
2be: 48 83 fa 1f cmp $0x1f,%rdx
2c2: 0f 85 77 ff ff ff jne 23f <change_pte_range+0x23f>
swp_entry_to_pte():
/home/sasha/linux-next/include/linux/swapops.h:84
2c8: 48 c1 e0 0a shl $0xa,%rax
2cc: 48 89 c1 mov %rax,%rcx
2cf: 0c bc or $0xbc,%al
2d1: 48 83 c9 3c or $0x3c,%rcx
2d5: 45 85 c0 test %r8d,%r8d
2d8: 48 0f 45 c8 cmovne %rax,%rcx
set_pte_at():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:524
2dc: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 2e4 <change_pte_range+0x2e4>
2e3: 00
2df: R_X86_64_PC32 pv_mmu_ops+0x9b
2e4: 0f 85 a4 00 00 00 jne 38e <change_pte_range+0x38e>
2ea: 0f 0b ud2
2ec: 0f 1f 40 00 nopl 0x0(%rax)
change_pte_range():
/home/sasha/linux-next/mm/mprotect.c:103
2f0: 48 8b 7d c8 mov -0x38(%rbp),%rdi
2f4: 48 89 ca mov %rcx,%rdx
2f7: 48 89 de mov %rbx,%rsi
2fa: 48 89 4d a8 mov %rcx,-0x58(%rbp)
2fe: e8 00 00 00 00 callq 303 <change_pte_range+0x303>
2ff: R_X86_64_PC32 vm_normal_page-0x4
/home/sasha/linux-next/mm/mprotect.c:104
303: 48 85 c0 test %rax,%rax
306: 0f 84 33 ff ff ff je 23f <change_pte_range+0x23f>
/home/sasha/linux-next/mm/mprotect.c:104 (discriminator 1)
30c: 48 8b 40 08 mov 0x8(%rax),%rax
310: 83 e0 03 and $0x3,%eax
313: 48 83 f8 03 cmp $0x3,%rax
317: 0f 84 22 ff ff ff je 23f <change_pte_range+0x23f>
/home/sasha/linux-next/mm/mprotect.c:105
31d: 48 8b 4d a8 mov -0x58(%rbp),%rcx
321: 81 e1 01 03 00 00 and $0x301,%ecx
327: 48 81 f9 00 02 00 00 cmp $0x200,%rcx
32e: 0f 84 0b ff ff ff je 23f <change_pte_range+0x23f>
pte_val():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:450
334: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 33c <change_pte_range+0x33c>
33b: 00
337: R_X86_64_PC32 pv_mmu_ops+0xe3
ptep_set_numa():
/home/sasha/linux-next/include/asm-generic/pgtable.h:740
33c: 49 8b 3c 24 mov (%r12),%rdi
pte_val():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:450
340: 0f 84 12 01 00 00 je 458 <change_pte_range+0x458>
346: ff 14 25 00 00 00 00 callq *0x0
349: R_X86_64_32S pv_mmu_ops+0xe8
pte_mknuma():
/home/sasha/linux-next/include/asm-generic/pgtable.h:724
34d: a8 01 test $0x1,%al
34f: 0f 84 95 01 00 00 je 4ea <change_pte_range+0x4ea>
/home/sasha/linux-next/include/asm-generic/pgtable.h:727
355: f6 c4 01 test $0x1,%ah
358: 0f 85 8e 01 00 00 jne 4ec <change_pte_range+0x4ec>
/home/sasha/linux-next/include/asm-generic/pgtable.h:729
35e: 48 83 e0 fe and $0xfffffffffffffffe,%rax
/home/sasha/linux-next/include/asm-generic/pgtable.h:730
362: 80 cc 02 or $0x2,%ah
__pte():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:435
365: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 36d <change_pte_range+0x36d>
36c: 00
368: R_X86_64_PC32 pv_mmu_ops+0xeb
pte_mknuma():
/home/sasha/linux-next/include/asm-generic/pgtable.h:730
36d: 48 89 c7 mov %rax,%rdi
__pte():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:435
370: 0f 84 2a 01 00 00 je 4a0 <change_pte_range+0x4a0>
376: ff 14 25 00 00 00 00 callq *0x0
379: R_X86_64_32S pv_mmu_ops+0xf0
set_pte_at():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:524
37d: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 385 <change_pte_range+0x385>
384: 00
380: R_X86_64_PC32 pv_mmu_ops+0x9b
pte_mknuma():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:435
385: 48 89 c1 mov %rax,%rcx
set_pte_at():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:524
388: 0f 84 5c ff ff ff je 2ea <change_pte_range+0x2ea>
38e: 48 8b 7d d0 mov -0x30(%rbp),%rdi
392: 48 89 de mov %rbx,%rsi
395: 4c 89 e2 mov %r12,%rdx
398: ff 14 25 00 00 00 00 callq *0x0
39b: R_X86_64_32S pv_mmu_ops+0xa0
39f: e9 96 fe ff ff jmpq 23a <change_pte_range+0x23a>
3a4: 0f 1f 40 00 nopl 0x0(%rax)
pmd_val():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:571
3a8: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 3b0 <change_pte_range+0x3b0>
3af: 00
3ab: R_X86_64_PC32 pv_mmu_ops+0x10b
3b0: 48 8b 3e mov (%rsi),%rdi
3b3: 74 7b je 430 <change_pte_range+0x430>
3b5: ff 14 25 00 00 00 00 callq *0x0
3b8: R_X86_64_32S pv_mmu_ops+0x110
3bc: 48 ba 00 f0 ff ff ff movabs $0x3ffffffff000,%rdx
3c3: 3f 00 00
3c6: 48 21 d0 and %rdx,%rax
3c9: 48 89 c7 mov %rax,%rdi
3cc: 48 b8 00 00 00 00 00 movabs $0xffffea0000000000,%rax
3d3: ea ff ff
3d6: 48 c1 ef 06 shr $0x6,%rdi
3da: 48 8b 44 07 30 mov 0x30(%rdi,%rax,1),%rax
3df: 48 8b 3e mov (%rsi),%rdi
3e2: 48 89 45 b8 mov %rax,-0x48(%rbp)
pte_offset_kernel():
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:551
3e6: 48 89 d8 mov %rbx,%rax
3e9: 48 c1 e8 09 shr $0x9,%rax
3ed: 25 f8 0f 00 00 and $0xff8,%eax
pmd_val():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:571
3f2: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 3fa <change_pte_range+0x3fa>
3f9: 00
3f5: R_X86_64_PC32 pv_mmu_ops+0x10b
pte_offset_kernel():
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:551
3fa: 48 89 c1 mov %rax,%rcx
pmd_val():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:571
3fd: 74 31 je 430 <change_pte_range+0x430>
3ff: ff 14 25 00 00 00 00 callq *0x0
402: R_X86_64_32S pv_mmu_ops+0x110
spin_lock():
/home/sasha/linux-next/include/linux/spinlock.h:309
406: 48 8b 7d b8 mov -0x48(%rbp),%rdi
pmd_page_vaddr():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:571
40a: 49 89 c4 mov %rax,%r12
pte_offset_kernel():
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:551
40d: 48 b8 00 00 00 00 00 movabs $0xffff880000000000,%rax
414: 88 ff ff
417: 48 01 c8 add %rcx,%rax
41a: 4c 21 e2 and %r12,%rdx
41d: 4c 8d 24 10 lea (%rax,%rdx,1),%r12
spin_lock():
/home/sasha/linux-next/include/linux/spinlock.h:309
421: e8 00 00 00 00 callq 426 <change_pte_range+0x426>
422: R_X86_64_PC32 _raw_spin_lock-0x4
426: e9 f8 fc ff ff jmpq 123 <change_pte_range+0x123>
42b: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
pmd_val():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:571
430: 0f 0b ud2
432: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
spin_unlock():
/home/sasha/linux-next/include/linux/spinlock.h:349
438: 4c 89 ff mov %r15,%rdi
43b: e8 00 00 00 00 callq 440 <change_pte_range+0x440>
43c: R_X86_64_PC32 _raw_spin_unlock-0x4
change_pte_range():
/home/sasha/linux-next/mm/mprotect.c:78
440: 31 c0 xor %eax,%eax
/home/sasha/linux-next/mm/mprotect.c:136
442: 48 83 c4 38 add $0x38,%rsp
446: 5b pop %rbx
447: 41 5c pop %r12
449: 41 5d pop %r13
44b: 41 5e pop %r14
44d: 41 5f pop %r15
44f: 5d pop %rbp
450: c3 retq
451: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
pte_to_swp_entry():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:450
458: 0f 0b ud2
45a: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
pte_val():
460: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 468 <change_pte_range+0x468>
467: 00
463: R_X86_64_PC32 pv_mmu_ops+0xe3
468: 74 ee je 458 <change_pte_range+0x458>
46a: 48 89 c7 mov %rax,%rdi
46d: ff 14 25 00 00 00 00 callq *0x0
470: R_X86_64_32S pv_mmu_ops+0xe8
pte_mknonnuma():
/home/sasha/linux-next/include/asm-generic/pgtable.h:701
474: 80 e4 fd and $0xfd,%ah
/home/sasha/linux-next/include/asm-generic/pgtable.h:702
477: 48 83 c8 21 or $0x21,%rax
__pte():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:435
47b: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 483 <change_pte_range+0x483>
482: 00
47e: R_X86_64_PC32 pv_mmu_ops+0xeb
pte_mknonnuma():
/home/sasha/linux-next/include/asm-generic/pgtable.h:702
483: 48 89 c7 mov %rax,%rdi
__pte():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:435
486: 74 18 je 4a0 <change_pte_range+0x4a0>
488: ff 14 25 00 00 00 00 callq *0x0
48b: R_X86_64_32S pv_mmu_ops+0xf0
48f: 48 89 c7 mov %rax,%rdi
492: e9 0c fd ff ff jmpq 1a3 <change_pte_range+0x1a3>
497: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1)
49e: 00 00
4a0: 0f 0b ud2
4a2: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
ptep_modify_prot_start():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:490
4a8: 0f 0b ud2
4aa: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
arch_leave_lazy_mmu_mode():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:699
4b0: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 4b8 <change_pte_range+0x4b8>
4b7: 00
4b3: R_X86_64_PC32 pv_mmu_ops+0x13b
4b8: 74 34 je 4ee <change_pte_range+0x4ee>
4ba: ff 14 25 00 00 00 00 callq *0x0
4bd: R_X86_64_32S pv_mmu_ops+0x140
spin_unlock():
/home/sasha/linux-next/include/linux/spinlock.h:349
4c1: 48 8b 7d b8 mov -0x48(%rbp),%rdi
4c5: e8 00 00 00 00 callq 4ca <change_pte_range+0x4ca>
4c6: R_X86_64_PC32 _raw_spin_unlock-0x4
change_pte_range():
/home/sasha/linux-next/mm/mprotect.c:135
4ca: 48 8b 45 b0 mov -0x50(%rbp),%rax
4ce: e9 6f ff ff ff jmpq 442 <change_pte_range+0x442>
4d3: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
arch_enter_lazy_mmu_mode():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:694
4d8: 0f 0b ud2
4da: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
ptep_modify_prot_commit():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:503
4e0: 0f 0b ud2
4e2: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
pte_to_swp_entry():
/home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:885
4e8: 0f 0b ud2
ptep_set_numa():
/home/sasha/linux-next/include/asm-generic/pgtable.h:724
4ea: 0f 0b ud2
/home/sasha/linux-next/include/asm-generic/pgtable.h:727
4ec: 0f 0b ud2
arch_leave_lazy_mmu_mode():
/home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:699
4ee: 0f 0b ud2
Thanks,
Sasha
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